https://dspace.pass.ps/handle/123456789/28 Tue, 14 Apr 2026 05:03:37 GMT 2026-04-14T05:03:37Z https://dspace.pass.ps/handle/123456789/37 Title: Cellulose with Bidentate Chelating Functionality: An Adsorbent for Metal Ions from Wastewater Authors: Deghles, Abdalhadi; Hamed, Othman; Azar, Mai; Ab-Lail, Bahia; Azzaoui, Khalil; Abu Obied, Ahmad; Jodeh, Shehdeh Abstract: A cellulose derivative with multiple coordination sites for metals composed of cellulose powder and 1,2-pheneylnediamine was synthesized and evaluated as an adsorbent for metal ions from wastewater. The cellulose powder was generated from the solid waste of the olive industry. The adsorption efficiency of the cellulose amine polymer toward Fe(III) and Pb(II) was investigated as a function of adsorbent dose, temperature, pH, and time. The adsorption parameters that lead to excellent adsorption efficiency were determined. In addition, the polymer showed an excellent extraction efficiency toward approximately 20 metal ions present in a sewage sample. The cellulose amine derivative had several coordination sites that included amine, hydroxyl, and aromatic groups. The diversity and frequency of the coordination sites explained the high efficiency of the polymer for metal ions. The thermodynamic analysis results supported the spontaneous adsorption efficiency of the polymer at room temperature. The adsorption process fit well with the Langmuir adsorption isotherm model. Tue, 01 Jan 2019 00:00:00 GMT https://dspace.pass.ps/handle/123456789/37 2019-01-01T00:00:00Z https://dspace.pass.ps/handle/123456789/36 Title: Treatment of Tannery Wastewater by the Application of Electrocoagulation Process Using Iron and Aluminum Electrodes Authors: Deghles, Abdalhadi Abstract: Until relatively recently, little has been done of effective technique “zero effluent” to conserve energy and water. Tannery wastewater is known as complex characteristics. In this study batch electrocoagulation experiments were carried out to assess the removal of color and chemical oxygen demand (COD) from tannery wastewater using two types of electrode materials: aluminum and iron. The effects of current density, electrolysis time and initial pH were investigated for tannery wastewater. Therefore, the operating costs for each electrode have been calculated. Based on results, it can be concluded that iron is tremendous to aluminum as electrode material, from COD removal and energy consumption views. All the conclusions of the study revealed that treatment of tannery by EC can be applied as a step of a hybrid treatment Sat, 12 Oct 2019 00:00:00 GMT https://dspace.pass.ps/handle/123456789/36 2019-10-12T00:00:00Z https://dspace.pass.ps/handle/123456789/35 Title: Synthesis of a cross-linked cellulose-based amine polymer and its application in wastewater purification Authors: Hamed, Othman; Abu Lail, Bahia; Deghles, Abdalhadi; Qasem, Basima; Azzaoui, Khalil; Abu Obied, Ahmad; Algarra, Manuel; Jodeh, Shehdeh Abstract: A cross-linked cellulose-amine polymer composed of nanocrystalline cellulose and 1,4-pheneylnediamine was synthesized, and its application as an adsorbent of metal ions from wastewater was dementated. The nanocrystalline cellulose was generated from an olive industry solid waste. The cross-linked polymer analysis results of FTIR, NMR, TEM, SEM, and XRD were generated. The adsorption efficiency of the cellulose-amine polymer toward Cu(II) and Pb(II) was investigated as a function of adsorbent dose, temperature, pH, and time. The adsorption parameters that lead to an excellent adsorption efficiency were determined. The polymer also showed an excellent extraction efficiency toward 20 metal ions present in a sewage sample. The various functional groups present on polymer surface such as amino, hydroxyl, and aryl played a crucial role on metal adsorption. Thermodynamic analysis results support the high efficiency of the polymer toward the metal ions. Kinetic study results reveal that the adsorption process fits well with the pseudo-second-order model and the adsorption isotherm follows a Langmuir isotherm model Tue, 30 Jul 2019 00:00:00 GMT https://dspace.pass.ps/handle/123456789/35 2019-07-30T00:00:00Z https://dspace.pass.ps/handle/123456789/34 Title: Dual Component Polymeric Epoxy-Polyaminoamide Based Zinc Phosphate Anticorrosive Formulation for 15CDV6 Steel Authors: Dagdag, Omar; Hanbali, Ghadir; Khalaf, Bayan; Jodeh, Shehdeh; El Harfi, Ahmed; Deghles, Abdelhadi Abstract: The present research is focused on a formulation with two active components as an anticorrosive polymer coating for 15CDV6 steel. The dual component formulation (epoxy-zinc phosphate (ZP) coating) consists of a polymeric epoxy resin Bisphenol A diglycidyl ether (DGEBA) cured with a polyaminoamide as a first component and zinc phosphate (Zn3(PO4)2(H2O)4) (ZP) added in 5% by weight as a second component. The anticorrosive performance of the epoxy-ZP coating was evaluated against the standard coating, which consists of only one component, the cured polymeric epoxy resin. The two polymer coatings were evaluated by electrochemical impedance spectroscopy (EIS). The surface morphology was of the two polymer coatings were characterized by scanning electron microscopy (SEM). The coated samples of 15CDV6 steel were tested in a harsh environment of corrosive electrolytes (3 wt % NaCl solution). Under these conditions, a very high impedance value was obtained for 15CDV6 steel coated with the epoxy-ZP coating. Even after exposure for a long period of time (5856 h), the performance was still acceptable, indicating that the epoxy-ZP coating is an excellent barrier. The standard epoxy coating provided an adequate corrosion protection performance for a short period of time, then the performance started to decline. The results were confirmed by surface characterization, a cross-sectional image obtained by optical microscopy for an epoxy-ZP coating applied on 15CDV6 steel exposed for 5856 h to a salt spray test showed that the coating is homogeneous and adheres well to the surface of the steel. So, the coating with a dual component could have great potential in marine applications as anticorrosive for steel Wed, 24 Jul 2019 00:00:00 GMT https://dspace.pass.ps/handle/123456789/34 2019-07-24T00:00:00Z